Add professional support link

.github/ISSUE_TEMPLATE/config.yml

@@ -7,6 +7,9 @@ contact_links:
   - name: ❓ Discussion
     url: https://github.com/netbox-community/netbox/discussions
     about: "If you're just looking for help, try starting a discussion instead."
+  - name: 👔 Professional Support
+    url: https://netboxlabs.com/netbox-enterprise/
+    about: "Professional support is available for NetBox Enterprise or Cloud."
   - name: 🌎 Correct a Translation
     url: https://explore.transifex.com/netbox-community/netbox/
     about: "Spot an incorrect translation? You can propose a fix on Transifex."